Scribe Post #3
Learning Target
Add and subtract fractions with unlike denominators and justify your solutions using manipulatives and mathmatical reasoning.
Lesson
To add and subtract fractions you must first find the LCD (Least Common Denominator). To do this you must find the least common multiple that BOTH denominators go into and put that as both fractions' denominators.
Examples
1/4+2/3=? LCD=12 1/4=3/12 2/3=8/12 3/12+8/12=11/12
Scribe Post #2
Learning Target
Use strategies to develop formulas for finding the circumference of circles
What We Did
We measured the circumference of random circular objects to the nearest millimeter. We then measured the diameter to the nearest millimeter. We then found out that the diameter of a circle multiplied by pi equals the circumference of the circle. Example: d*pi=c if d=4, then 4*3.14=c and c=12.56.
To find out more, visit this awesome link.
The radius is the half of diameter. So, if you multiply the radius by 2, then multiply it by pi, or 3.14, you get the circumference of that circle. r*2*pi=c
Scribe Post #1
Learning Target